Concrete pouring method for prefabricated stand column

Abstract

The invention provides a concrete pouring method for a prefabricated stand column. The concrete pouring method includes the steps of disposing a group of pouring guide pipes of different lengths in astand column reinforcement cage in the length direction, fixing upper ports of the pouring pipes to the top of the stand column reinforcement cage, making a lower port of the longest pouring guide pipe in the group close to the bottom face of the stand column reinforcing cage and lower ports of the other pouring guide pipes have an increasing distance from the bottom face of the stand column reinforcing cage in sequence, pouring concrete into a mold through the longest pouring guide pipe first after the pouring guide pipes are fixed so that the lower port of the longest pouring guide pipe canbe embedded in the concrete when the concrete pouring amount increases, continuing pouring concrete through the second longest pouring guide pipe when the concrete pouring height is close to the lowerport of the second longest pouring guide pipe and detaching the longest pouring guide pipe, and repeatedly executing the aforementioned steps according to the lengths of the pouring guide pipes fromlong to short until poured concrete is close to the top of the stand column reinforcing cage. By means of the method, drop height and speed of concrete are effectively reduced, and concrete disintegration is avoided.

Description

technical field [0001] The invention relates to the construction field of prefabricated columns in the construction technology of prefabricated bridges, in particular to a method for pouring concrete of prefabricated columns. Background technique [0002] When the prefabricated components of the pier column are manufactured in the factory, the conventional automobile pump is used for concrete pouring. Due to the high height of the column and the dense arrangement of steel bars, it is difficult for the pouring hose of the pump truck to extend into the steel cage skeleton during the concrete pouring of the column. Pumping concrete directly at the top of the column leads to a high concrete blanking height, and high concrete drop height is prone to concrete segregation, and the concrete will continuously impact the column hoops and tie bars during the concrete drop process, which further aggravates the The possibility of concrete segregation also causes some deformation and dama...

AI Technical Summary

Problems solved by technology

[0002] When the prefabricated components of the pier column are manufactured in the factory, the conventional automobile pump is used for concrete pouring. Due to the high height of the column and the dense arrangement of steel bars, it is difficult for the pouring hose of the pump truck to extend into the steel cage skeleton during the concrete pouring of the column. Pumping concrete directly at the top of the column leads to a high concrete blanking height, and high concrete drop height is prone to concrete segregation, and the concrete will continuously impact the column hoops and tie bars during the concrete drop process, which further aggravates the The possibility of concrete segregation also causes some deformation and damage to the stirrups and tie bars, which is not good for the quality of concrete pouring

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